20004443121431 has 2 divisors, whose sum is σ = 20004443121432. Its totient is φ = 20004443121430.

The previous prime is 20004443121391. The next prime is 20004443121433. The reversal of 20004443121431 is 13412134440002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20004443121431 - 2¹⁴ = 20004443105047 is a prime.

It is a super-2 number, since 2×20004443121431² (a number of 27 digits) contains 22 as substring.

Together with 20004443121433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20004443121394 and 20004443121403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004443121433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002221560715 + 10002221560716.

It is an arithmetic number, because the mean of its divisors is an integer number (10002221560716).

Almost surely, 2^{20004443121431} is an apocalyptic number.

20004443121431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004443121431 is an equidigital number, since it uses as much as digits as its factorization.

20004443121431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 20004443121431 its reverse (13412134440002), we get a palindrome (33416577561433).

The spelling of 20004443121431 in words is "twenty trillion, four billion, four hundred forty-three million, one hundred twenty-one thousand, four hundred thirty-one".